What is (\partial)/(\partial x)(x^3cos(y)) ?

The answer to (\partial)/(\partial x)(x^3cos(y)) is 3x^2cos(y)

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(\partial)/(\partial x)(x^3cos(y))

\frac{\partial}{\partial x} (x^{3} cos (y))

3 x^{2} cos (y)

Solution steps

\frac{\partial}{\partial x} (x^{3} cos (y))

Treat

y

as a constant

Take the constant out:

(a \cdot f)^{'} = a \cdot f^{'}

= cos (y) \frac{\partial}{\partial x} (x^{3})

Apply the Power Rule:

\frac{d}{d x} (x^{a}) = a \cdot x^{a - 1}

= cos (y) \cdot 3 x^{3 - 1}

Simplify

= 3 x^{2} cos (y)

What is (\partial)/(\partial x)(x^3cos(y)) ?
The answer to (\partial)/(\partial x)(x^3cos(y)) is 3x^2cos(y)